David, Kyocera KC-120-1’s from 1999 to Dec 2002 will fail from a defective solder joint. Although out of warranty, they are still be warranted by Kyocera and replaced with a remanufactured KC-120-1R. Contact them (rae.parafin...@kyocera.com) with the serial numbers and mfg dates to get an RMA started.
We keep the remanufactured units in stock at our store because we see so many of these. Kyocera will also pay labor to replace them. Thank you, Larry Crutcher Starlight Solar Power Systems On Jun 11, 2014, at 4:47 PM, Dave <d...@independentpowerllc.com> wrote: Wrenches, I troubleshot an underperforming off grid array today and found low Voc's in 4 out of 10 KC-120's (nominal 12v modules rated at 21.5 Voc and 7.45 Isc). Modules are vintage 2000. Under modest sunlight (500 to 600W per M sqd) 6 modules measured from 18 to 19 Voc and 4 Isc. Four modules measured from 9.6 to 13.7 Voc and 4 Isc. I was chased off the roof by a coming thunderstorm and did not check for bad diodes. These modules have nice old school J-boxes with 6 diodes per each module. Am I looking at a diode issue, or failing modules? Thanking you in advance for your time, David Palumbo Independent Power LLC 462 Solar Way Drive Hyde Park, VT 05655 802-888-7194 _______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
_______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
